Thin wall irrigation emitter tube
US4254916A · kind A · utility
10Cited by
2References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 7, 1978 |
| Grant date | Mar 10, 1981 |
| Priority date | — |
| Expiry date | Aug 7, 1998 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C53/086
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A thin wall irrigation emitter tube is constructed of a generally flat configuration having a plurality of holes in a crease extending along the top of the tubing for distribution from the tubing in vertical spray or streams. The method of forming the tubing includes the forming of a rib or crease along the upper surface in which holes are formed by means of laser or the like so that smearing of the melted tube material during subsequent flattening of the tubing and thereby closing or partially closing of the holes is prevented.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.